Modeling the impact of soft tissue on axial transmission measurements of ultrasonic guided waves in human radius

2008 ◽  
Vol 124 (4) ◽  
pp. 2364-2373 ◽  
Author(s):  
Petro Moilanen ◽  
Maryline Talmant ◽  
Vantte Kilappa ◽  
Patrick Nicholson ◽  
Sulin Cheng ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Transmission Measurements ◽  
The Impact ◽  
Axial Transmission

Nonlinear Inversion of Ultrasonic Guided Waves for in Vivo Evaluation of Cortical Bone Properties

2021 ◽  
Author(s):  
Xiaojun Song ◽  
Tiandi Fan ◽  
Jundong Zeng ◽  
QinZhen Shi ◽  
Qiong Huang ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Cortical Bone ◽  
Cortical Thickness ◽  
Guided Waves ◽  
Transverse Velocity ◽  
Ultrasonic Guided Waves ◽  
Bulk Wave ◽  
True Value ◽  
The Impact

Abstract Ultrasonic guided waves (UGW), which propagate throughout the whole thickness of cortical bone, are attractive in the early diagnosis of osteoporosis. However, it is challenging due to the impact of soft tissue and the inherent difficulties related to the multiparametric inversion of cortical bone quality factors, such as cortical thickness and bulk wave velocities. Therefore, an UGW based multiple-parameter inversion algorithm is developed to predict strength-related factors in this research. In simulation, a free plate (cortical bone) and a bilayer plate (soft tissue and cortical bone) are used to validate the proposed method. The inverted cortical thickness (CTh), longitudinal velocity (V L ) and transverse velocity (V T ) are in accordance with the true value. Then four bovine cortical bone plates are used in the in vitro experiments. Compared with the reference values, the relative errors for cortical thicknesses are 3.96%, 0.83%, 2.87% and 4.25% respectively. In the in vivo measurements, ultrasonic guided waves are collected from ten volunteers’ tibia. The theoretical dispersion curves depicted by the estimated parameters (V T , V L , CTh) match well with the extracted experimental ones. In comparison to the dual-energy x-ray absorptiometry (DXA), the results show that the estimated transverse velocity and cortical thickness are highly sensitive to the osteoporosis. Therefore, these two parameters (CTh and V T ) of long bones have potential to diagnose bone status in clinical applications.

scholarly journals A model for ultrasonic guided waves in a cortical bone plate coupled with a soft-tissue layer

2019 ◽  
Author(s):  
Phuong Thuy Nguyen ◽  
Hoai Nguyen ◽  
Ductho Le ◽  
Haidang Phan
Keyword(s):  
Soft Tissue ◽  
Cortical Bone ◽  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Bone Plate ◽  
Tissue Layer

Simulation of the Propagation Behaviors of Ultrasonic Guided Waves to Detect the Impact Damage in a CFRP Skin-Stringer Structure

2019 ◽  
Vol 2019 (0) ◽  
pp. J40138P
Author(s):  
Mengyi LIU ◽  
Peiwen DENG ◽  
Osamu SAITO ◽  
Yoji OKABE ◽  
Hideki SOEJIMA
Keyword(s):  
Guided Waves ◽  
Impact Damage ◽  
Ultrasonic Guided Waves ◽  
The Impact

Simulation of Guided Waves Propagation in Axial Transmission Measurements in Human Radius

2007 ◽  
Vol 9 ◽  
pp. 127-141
Author(s):  
Łukasz Pieczonka ◽  
Tadeusz Uhl ◽  
Adam Martowicz
Keyword(s):  
Wave Propagation ◽  
Guided Waves ◽  
Three Dimensional ◽  
Low Frequency ◽  
Medical Diagnostics ◽  
Theoretical Background ◽  
Transmission Measurements ◽  
Set Up ◽  
Anatomical Geometry ◽  
Axial Transmission

This paper is a brief review of the axial transmission measurements methodology. Theoretical background and description of the methodology is presented. Simulations made to verify some of the statements found in the scientific literature about the subject matter are described. Simulation performed were meant to be a basis for specifying parameters of the experimental set up to be used in the future. Three dimensional finite difference code was used to simulate wave propagation in human radius. Two models have been prepared to compare the results. One was an idealized geometry of the diaphysis of human radius and second was a reconstructed anatomical geometry from scans acquired with Computed Tomography (CT). Conclusions about the wave propagation character and feasibility of low frequency measurements in medical diagnostics are discussed.

ULTRASONIC GUIDED WAVES FOR THE INSPECTION OF ADHESIVELY BONDED JOINTS

2008 ◽  
Author(s):  
Padma Kumar Puthillath ◽  
Fei Yan ◽  
Clifford J. Lissenden ◽  
Joseph L. Rose ◽  
Donald O. Thompson ◽  
...  
Keyword(s):  
Guided Waves ◽  
Ultrasonic Guided Waves ◽  
Bonded Joints ◽  
Adhesively Bonded ◽  
Adhesively Bonded Joints
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